Cloth reel



April 30, 1963 Filed Sept. 11, 1961 E. H. ROBINSON CLOTH REEL 2 Sheets-Sheet 1 INVENTOK EARL H. ROBINS ON AT TO R NEY.

April 30, 1963 Filed Sept. 11, 1961 E. H. ROBINSON 3,087,607

CLOTH REEL 2 Sheets-Sheet 2 INVENTOR.

20 EARL HROBINSON ATTORNEY.

United States Patent Q 3,087,607 CLOTH REEL Earl H. Robinson, 87 Green Knolls Drive, Wayne, NJ. Filed Sept. 11, 1961, Ser. No. 137,343 10 Claims. (Cl. 205ti) This invention relates to cloth boards, reels or the like used as supporting cores for winding fabric thereon to provide flat fabric packages or bolts.

An object of this invention is to provide an improved cloth board Which is of reduced weight as compared to conventional boards, yet has a rigidity and strength sufficient to permit proper winding of the fabric thereon and to carry the weight of the wound fabric.

A further object of this invention is to provide an improved cloth board which comprises a honeycomb paper core and a facing for enveloping the core; the core being an extensible structure which permits a predetermined stretch of the core during its assembly with the facing, to thereby adjust the size of the cells of the core and determine the unit weight of the completed board.

Another object of this invention is to provide an improved cloth board which comprises a honeycomb paper core and a facing for enveloping the core; the core being in the form of sliced units which may be varied as to thickness, thus producing cloth boards of varied thickness to suit selected fabric weights and bolt windings.

Yet a further object of this invention is to provide improved cloth boards made up of honeycomb paper cores and facings enveloping the cores wherein the core structure may be suitably related to the facing to attain maximum strength and resistance to crushing.

Other objects of this invention will in part be obvious and in part hereinafter pointed out.

In the drawings, FIG. 1 is a top plan view of a portion of a honeycomb core element in extended condition, which is used in forming the cloth board of the instant invention; FIG. 2 is a front elevational view thereof; FIG. 3 is a top plan view of a portion of a cloth board embodying the invention, with parts cut away; FIG. 4 is a sectional view taken on the line 4-4 of FIG. 3; and FIG. 5 is a top plan view similar to that of FIG. 3 and showing a modified form of the invention; and FIG. 6 is a sectional view taken on the line 6-6 of FIG. 3.

The cloth board of the instant invention comprises essentially a honeycomb paper core element and a facing for the core; where the core element is made by gluing paper sheets together at spaced, staggered intervals and sliced transversely thereof to provide slices of a selected thickness which are expansible to form a hexagonal cell structure.

The facing may be in the form of a single paper sheet wrapped about the faces and edges of the core slice and adhesively adhered to the edges of the core strips to retain the core slice in a stretched condition to provide cells of a predetermined size. Alternatively, a pair of facing sheets may be adhered to the opposite faces of the core slice and paper tapes may be applied to the side edges thereof. In either case, the board is finished by the application to the end edges thereof folded cardboard end closures and finish paper end tapes which are adapted to be imprinted or otherwise marked.

Thus as shown in FIG. 1, 1t) designates a honeycomb paper core element, in partially extended form. Core element 10 is made up of paper sheets glued together at longitudinally spaced intervals which are in laterally staggered relation. The glued sheets are then sliced transversely to any desired thickness, as indicated in FIG. 2.

The element 10 accordingly comprises paper strips 11 adhered together at longitudinal intervals 12 and inter- 'ice vals 13 which are in staggered relation to intervals 12. Upon stretching the element 10, hexagonal cells 14 are produced. It will be apparent that element 10 may be stretched to vary the size of the cells 14. The opposite side edges of element 10 are defined by the doubled, strip portions 15 which are in parallel relation and at substantially uniformly spaced intervals.

Each of the cells 14 is defined by opposed doubled strip portions 12 or 13, and single strip portions 16, 17, 18 and 19. Preferably, the paper sheets from which core element 10 is formed, are cut from kraft paper having a basis weight of 70 to 160 pounds for 500 sheets of 24" x 36 size. The core element slices 10 may be condensed longitudinally to dispose adjacent strips 11 in face to face relation throughout their length, and while in such condensed condition, the opposite side edges may be rounded as at 20, as shown in FIG. 6.

The cloth board 25 shown in FIGS. 3, 4 is formed by providing a honeycomb slice 10 of a selected width and which can be stretched longitudinally to a desired length corresponding to the length of the board 25, while reducing the original width of the slice to the desired width of the board 25, thereby determining the gverall size of cells 14 and the unit weight of the resultant oard.

While the core slice 10 is held in the desired stretched condition, a facing sheet of paper, generally indicated at 26, is wrapped about the same to bring the opposite side edges 27, 28 into overlapping relation; the overlapped edge portions being glued together. Also, glue is applied to the inner surface portions 29 of sheet 26, or to the opposite edges 30, 31 of the strips 11, to adhere the facing 26 securely to the core element 10.

By way of example, the core element 10 may have a width of 10.5 in its longitudinally compressed, noncellular condition, and is then longitudinally stretched to reduce the width thereof to about 7.75". Obviously, a lesser stretch of the core element will give a board of increased unit weight. The paper stock for the facing may be kraft paper with a basis weight of from about to about 260 pounds for 500 sheets of 2 x 36" size.

The opposite side edges 32, 33 of facing 26 are unifor-mly reinforced against crushing by the uniformly spaced doubled strip portions 15 of core element 10. The opposite ends 34 of board 25 are enclosed and finished by cardboard strips 35 which are folded along parallel, longitudinal lines 36, 37 to channel form to receive the board ends 34.

The strips 35 are held in place by adhesive or staples and then covered by indicia paper strips 38 also folded to channel section and adhesively or otherwise secured to strips 35. Strips 38 may be preprinted or otherwise marked with the usual labeling items to mark and identify the fabrics to be wound on boards 25.

Alternatively, as shown in FIG. 5, a board 40 is formed from honeycomb core slice 10A which has its strips 11A extending parallel to the side edges of the board, rather than at right angles thereto, as in the case of board 25. in this case, the initial dimensions of the core slice are determined so as to provide the finish board dimensions when suitably stretched to give the desired cell size and unit weight.

.Also, the core slice 10A is retained in its stretched condition by kraft paper sheets 41, 42 which extend at their opposite side edges to the opposite side edges of the core slice and are adhesively secured to the edges of the strips 11A. Paper tapes 43, 44 are respectively Wrapped about the exposed side edges of the core slice 10A and are secured by adhesive in overlapping relation to the marginal side portions of facing sheets 41, 42. The ends of board 40 are finished with channeled cardboard strips 35A and indicia paper strips 38A, as previously described.

In forming core slices 10, A, the paper sheets may be glued in a manner to provide upon stretching, cells of varying size. It has been found that such cells may be from .5 to 1.5 measured on each side of a cell. Thus, the resultant cell structures may be used to minimize the gauge of the facing sheets as well as the thickness of the core slices, yet obtain maximum stiffness and strength in the finished board. However, the thickness of the board may be varied as desired by varying the thickness of the core slice 10, 10A as the same is cut from the glued sheets, from about A" to about 1".

While the edge of the core slice 10 is shown as rounded to give a smooth finish when the core is Wrapped, the core edges may be left in their original squared condition and the edges may be crushed during the wrapping operation to give a rounded edge effect.

As various changes might be made in the embodiments of the invention as herein disclosed without departing from the spirit thereof, it is understood that all matter herein shown or described shall be deemed illustrative and not limiting except as set forth in the appended claims.

Having thus disclosed my invention, I claim as new and desire to protect by Letters Patent:

1. A cloth board comprising a honeycomb paper core and a paper facing enveloping said core, said core comprising paper strips adhesively secured together at spaced longitudinal intervals and in laterally staggered relation to provide an expansible structure of hexagonal cells upon stretching the adhered strips, said facing being adhered to the opposite edges of the paper strips forming said core while said core is expanded to form said hexagonal cells of regulated size and said core structure is retained in expanded form by said facing to give said board a predetermined unit weight.

2. A cloth board as in claim 1 wherein the side edges of said core comprise doubled adhered strips disposed in substantially parallel relation.

3. A cloth board as in claim 1 wherein the end edges of said core comprise doubled adhered strips disposed in substantially parallel relation.

4. A cloth board as in claim 1 wherein said paper facing comprises a single sheet wrapped about said core with the opposite ends of said sheet in overlapping secured relation and the opposite end edges of said core are enclosed with channeled cardboard strips and indicia paper strips overlying said cardboard strips.

5. A cloth board comprising a cellular paper core and a paper facing enveloping said core, said core comprising a honeycomb structure having hexagonal cells extending transversely of the faces of said core, said core being extensible in one direction while reducing the width thereof to a predetermined dimension whereby to vary the size of said hexagonal cells, said facing being adhered to the opposite faces of said extended core to retain the core cells at a predetermined size, and laminated strip portions in channel section enclosing the end edges of said board.

6. A cloth board as in claim 5 wherein each side of each hexagonal cell is from about .5 to 1.5 in length.

7. A cloth board as in claim 5 wherein said core has a thickness of from about A to about 1".

8. A cloth board as in claim 5 wherein the paper from which said core is formed has a basis weight of from about to about 160 pounds for 500 sheets of 24 x 36" size.

9. A cloth board as in claim 8 wherein the paper from which said facing is formed has a basis weight of from about to about 200 pounds for 500 sheets of 24 X 36" size.

10. A cloth board comprising a cellular core and sheet facings for the opposite sides of said core, said core comprising a plurality of flexible strips of selected width to provide a core of corresponding thickness, said strips being secured together in face to face relation at longitudinally spaced points to provide an expansible core structure having hexagonal cells of a size varying in accordance with the extent of the core expansion, said facings being secured to the opposite edges of the strips forming said core while said core is in a determined expanded condition to retain said hexagonal cells in a size corresponding to said expanded condition, whereby said board has a regulated thickness and unit weight, a pair of strips respectively sealing the side edges of said core and adhered to marginal portions of said facings along the sides thereof and a pair of strips respectively sealing the end edges of said core and adhered to marginal portions of said facings along the ends thereof.

References Cited in the file of this patent UNITED STATES PATENTS 1,087,511 Scammel Feb. 17, 1914 1,112,957 Wilson Oct. 6, 1914 1,526,172 Near Feb. 10, 1925 2,609,314 Engel et al. Sept. 2, 1952 FOREIGN PATENTS 209,208 Great Britain Jan. 10, 1924 

1. A CLOTH BOARD COMPRISING A HONEYCOMB PAPER CORE AND A PAPER FACING ENVELOPING SAID CORE, SAID CORE COMPRISING PAPER STRIPS ADHESIVELY SECURED TOGETHER AT SPACED LONGITUDINAL INTERVALS AND IN LATERALLY STAGGERED RELATION TO PROVIDE AN EXPANSIBLE STRUCTURE OF HEXAGONAL CELLS UPON STRETCHING THE ADHERED STRIPS, SAID FACING BEING ADHERED TO THE OPPOSITE EDGES OF THE PAPER STRIPS FORMING SAID CORE WHILE SAID CORE IS EXPANDED TO FORM SAID HEXAGONAL CELLS OF REGULATED SIZE AND SAID CORE STRUCTURE IS RETAINED IN EXPANDED FORM BY SAID FACING TO GIVE SAID BOARD A PREDETERMINED UNIT WEIGHT. 